摘要
在对CBERS-2卫星CCD遥感图像辐射校正技术进行深入研究的基础上,给出了图像的0级预处理、传感器标定、大气辐射校正、照度校正等技术方法。在0级图像预处理方面,提出了利用测试数据来解决拼接区的辐射失真问题,并提出一种新的条纹检测技术;传感器的标校方面,讨论了底电平和非均匀性的消除方法;大气辐射校正采用回归分析法和直方图法;给出了太阳高度和地形坡度的照度校正方法与技术。
On the basis of deeply studying on CCD remote sensing image radiation correction technology of CBERS -2 satellite, the technology of level 0 image pre -processing, sensor calibration, atmosphere radiation correction, solar irradiation correction are presented. During the level 0 image pre - processing, a method of using CCD testing data to solve the radiation distortion in collage fields is proposed, and a new method of stripes detection technology is given. In the section of sensor calibration, the methods of reducing floor level and non - average features are discussed. Regression analysis and histogram are adopted during atmosphere radiation correction. The solar irradiation correction technology of solar height and terrain gradient is also provided.
出处
《电讯技术》
2008年第4期44-48,共5页
Telecommunication Engineering
关键词
CBERS资源卫星
遥感图像
辐射校正
0级图像预处理
传感器标定
大气校正
照度校正
CBERS
remote sensing image
radiation correction
level 0 image pre - processing
sensor ealibration
atmosphere radiation correction
solarirradiation correction
